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Eight green DDR3L ECC registered DIMMs in static bags

OWC

OWC 64GB (8x8GB) DDR3L 1066 PC3L-8500 CL7 4Rx8 240-pin 1.35V ECC Registered RDIMM server RAM

SKU CH-ABER-3ZA7V

Eight-module DDR3L kit delivers 64 GB of ECC registered server memory at 1066 MHz CL7 with 1.35 V operation

  • Total capacity64 GB (8 × 8 GB)
  • Rated speedDDR3L 1066 (PC3L 8500)
  • CAS latencyCL7
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank4Rx8

Capacity 64GB (8 x 8GB)

  • 64GB total capacity across eight 8GB modules
  • DDR3L 1066 PC3L-8500 CL7 for server workloads
  • ECC registered design detects and corrects memory errors
  • 35V low-voltage operation reduces power draw
  • 240-pin RDIMM form factor fits compatible workstations and servers

Server-grade memory kit

This OWC kit delivers 64GB of DDR3L ECC registered memory across eight 8GB modules. It is built for workstations, servers and NAS systems that require registered DIMMs with error correction. Standard desktop computers cannot use this memory, and it must not be mixed with unbuffered modules.

Build integration

The 240-pin DDR3L modules operate at 1.35V and run at 1066MHz with CL7 latency. A system must support registered ECC DDR3L memory and provide enough 240-pin slots for the eight-module kit. This memory frees up capacity for large datasets, virtualisation workloads and multi-user services that exceed standard desktop limits.

Thermals and power

Modules run at the JEDEC-standard 1.35V without a heat spreader, relying on chassis airflow for cooling. Registered buffering adds minimal electrical load per module, keeping power draw predictable in multi-DIMM configurations. Noise remains dependent on the system fan profile rather than the memory itself.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $160.99
Cheaper than about 54% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (8 × 8 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $2.52 per GB
Cheaper than about 91% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number8R5T34R8064K
Total capacity64 GB (8 × 8 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1066 (PC3L 8500)
Memory
CAS latencyCL7
ECC supportYes
Buffer typeRegistered
Memory rank4Rx8
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.35 V

Other versions of this model

5 more in the same range

Questions about this item

Does the 1.35V DDR3L voltage limit sustained throughput compared to 1.5V DDR3?

The modules run at the JEDEC-standard 1.35V, which is the specified operating voltage for DDR3L 1066; no higher-voltage mode is supported.

How much heat do the eight unbuffered 4Rx8 RDIMMs produce in a fully populated server chassis running 24/7?

Each 8GB RDIMM operates at 1.35V with CL7 timing and no heat spreader, so total power draw scales with all eight slots filled in a registered configuration.

Must the host system already support registered ECC DDR3L RDIMMs in a dual-channel layout for this 8x8GB kit to function?

Yes — the kit requires a workstation, server, NAS or router platform that accepts 240-pin DDR3L 1066 PC3L-8500 registered ECC memory in dual-channel mode.

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